Dorsum Burnet and the Head of the Cobra

Both of which are located in the image below. This is the continuing saga of processing the images taken the evening of March 7^th.

The general area is of the western edge of the moon, in Oceanus Procellarum, the Sea of Storms. Again, this is slightly “higher” up the terminator, but also slightly east, or right. The circled area contains the Dorsum Burnet. A “dorsum” is a lunar wrinkle ridge (dorsum is just the Latin name for ridge). A wrinkle ridge is a low, sinuous ridge on the moon. They are tectonic features formed when lava cooled and contracted. They are found in the mare and some crater floors. They often follow features, especially circular one, under the mare. The naming of the dorsa is apparently a somewhat hodge-podge affair. But this particular one seems to be fairly well identifiable. There are also many other dorsa visible, but not named, on the moon. This one was named for the 17^th century English naturalist Thomas Burnet.

The white arrow points to the “Head of the Cobra”, which is the southern end of Vallis Schroteri. Schroter's Valley is considered the longest sinuous rille or valley. I suppose the sinuous descriptor means that others can be longer if they are not sinuous. The “Head” is a crater. At the point of the arrow is a small rille on the floor of this valley which is the location of several transient lunar phenomena. From Wikipedia, a transient lunar phenomena is a short-lived light, color, or change in appearance of the surface of the moon. The assumption is that the TLP is outgassing or possibly impact cratering, although, if this seems to be a common location, I would guess outgassing. The very light crater the arrow is over is Aristarchus.